jealousy

Jealousy increases men's support for feminine honor norms, study finds

Baboon Sibling Rivalry Suggests Monkeys Feel Jealousy Like People

Interracial couples tend to feel more jealousy, but a strong sense of unity can buffer its impact

Relationship insecurity is the link between poor sleep and feelings of jealousy - EurekAlert!

People with high rejection sensitivity experience lower relationship satisfaction and closeness and higher conflict and jealousy. They are also more likely to be perpetrators/victims of partner violence, according to a meta-analysis of 60 studies (17,000 participants).